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AST_COLUMNSIZE
-
Get the number of bytes needed to hold a full column of data
- Description:
- This function returns the number of bytes of memory that must be
allocated prior to retrieving the data from a column using
AST_GETCOLUMNDATA.
- Invocation:
- RESULT = AST_COLUMNSIZE( THIS, COLUMN, STATUS )
- Arguments:
-
THIS = INTEGER (Given)
-
Pointer to the Table.
-
COLUMN = CHARACTER
(
) (Given)
-
The character string holding the name of the column. Trailing
spaces are ignored.
-
STATUS = INTEGER (Given and Returned)
-
The global status.
- Returned Value:
-
AST_COLUMNNULL = INTEGER
-
The number of bytes required to store the column data.
- Notes:
- An error will be reported if the named column does not exist in
the FitsTable.
- Zero will be returned as the function value in an error occurs.
Next: AST_CONVERT - Determine how to convert between two coordinate systems
Up: AST Routine Descriptions
Previous: AST_COLUMNSHAPE - Returns the shape of the values in a named column
AST A Library for Handling World Coordinate Systems in Astronomy
Starlink User Note 210
R.F. Warren-Smith & D.S. Berry
24th May 2011
E-mail:ussc@star.rl.ac.uk
Copyright (C) 2009 Science \& Technology Facilities Council